I got several questions abouts the lyrics of Michael Jackson's songs.

Could somebody help me?  Please!

Q1. A song named " They don't care about us"

      Part of its lyrics is as follows:

      Skin head, dead head
      Everybody gone bad
      Situation, aggravation
      Everybody allegation
      In the suite, on the news
      Everybody dog food
      Bang bang, shock dead
      Everybody's gone mad

      1) What do "skin head", "dead head", and "suite" mean here?

      2) What does "Everybody dog food" mean?

Q2. A song named " Human Nature"

      Part of its lyrics is as follows:

      Looking out
     Across the night-time
     The city winks a sleepless eye
     Hear her voice
     Shake my window
     Sweet seducing sighs
     Get me out
     Into the night-time
     Four walls won't hold me tonight
     If this town
     Is just an apple
     Then let me take a bite
     If they say -
     Why, why, tell 'em that is human nature
     Why, why, does he do me that way
     If they say -
     Why, why, tell 'em that is human nature
     Why, why, does he do me that way

     1) What does "Does he do me that way?" mean?

     2) What does "do" here mean?

Q3. A song named "Black or White"

     Part of its lyrics is as follows:

     They Print My Message
     In T he Saturday Sun
     I Had To Tell Them
     I Ain't Second To None
     And I Told About Equality
     And It's True
     Either You're Wrong
     Or You're Right
     But, If
     You're Thinkin' About My Baby
     It Don't Matter If You're Black Or White
     I Am Tired Of This Devil
     I Am Tired Of This Stuff
     I Am Tired Of This Business
    Sew When The Going Gets Rough
    I Ain't Scared Of Your Brother
    I Ain't Scared Of No Sheets
    I Ain't Scare Of Nobody
    Girl When The Goin' Gets Mean
    1) Does" I ain't second to none." mean that " I am the best." or " I am not the best."

        Is the sentence the so-called "double negative?"

    2) What does "I ain't scared of no sheets." mean?

        Is the sentence the so-called "double negative?"

    3) What does "sheets" here mean?

Q4. A song named "'The Love You Save"

      Part of its lyrics is as follows:

      When we played tag in grade school
      You wanted to be it.
      But chasing boys was just a fad
      You crossed your heart you'd quit.
      When we grew up you traded
      Your promise for my ring
      Now just like back to grade school
      You're doing the same old thing!

      1) What does "it" in the second line mean?

Q5. A song called "I want you back"

      Part of its lyrics is as follows:

      When I had you to myself
      I didn't want you around
      Those pretty faces always made you
      Stand out in a crowd
      Then someone picked you from the bunch
      One glance was all it took
      Now it's much too late for me
      To take second look
 1) "Those pretty faces always made you stand out in a crowd"

       So, is the "you" here very beautiful or very ugly?